Fire extinguisher



Oct. 1936. J. NEUMANN 2,057,840

FIRE EXTINGUISHER Filed Jan. 3, 1935 In vemor: Jase! Aama v PatentedOct. 20, 1936 PATENT OFFICE FIRE EXTINGUIS 4 Josef Neumann, Brunn,Czechoslovakia Application January 3, 1935, Serial No. 204 InCzechoslovakia January 24, 1934 2 Claims. (Cl. 189-28) This inventionrelates to an apparatus for extinguishing fire, in which a vat filledwith a quenching fluid is discharged by the combustion of a readilyignitible member. The said inven- 5 tion consists in that a vessel islocated within the said vat, which vessel is filled with gunpowder orthe like, on the inflammation of which a considerable pressure aboveatmospheric is produced and the quenching fluid driven out with great 10strength. The said device is intended, in particular, for the quenchingof fires caught by a carburettor of an automobile.

' It is known to provide automatically acting quenching devices in whichshot-firing cables are 15 used, so that it will take much time until theshot flring cable ignited by the flre actuates the device.

Furthermore, automatically acting quenching apparatus provided withmechanical devices such as, for example, springs under tension whichwill be released'by the burning-through of a cord,

, have been employed. In such apparatus either a cartridge which slowlyforces the quenching fluid from the apparatus is operated, or a glass 25vessel is broken from which the quenching fluid is free to flow out.Also these apparatus take relatively long time until the quenching fluidacts, and, therefore, cannot prevent a partial combustion of theendangered devices.

30 Moreover, these known devices present the disadvantage that ametallic mechanical device will, through the action of damp air orgases, undergo certain alterations on its surface, whereby their releasewill become unreliable. Also the constant 35 shocks that occur inautomobiles will act unfavorably on the said quenching devices, thecords retaining the springs under tension getting worn out whereby thedevice is uselessly actuated. Since it is difiicult to seal metallicvessels that 40 contain the quenching fluid, either the said quenchingfluid will evaporate, or if quenching powders are used, such powderswill become damp, so that it will to a considerable extent lose itsquenching ca acity.

45 All these disadvantages are entirely removed by the object of myinvention. This is attained by the absence of any mechanical devicewhatever as well as by the absence of a shot-firing cable, the wholedevice being made without the so use of any metal but solely ofartificial resin or the like, which has the advantage of not requiringany sealing or packing members, due to the fact that the individualparts of the container may be assembled to form a uniform piece by socoating the threads with some solvent, so that the joints are directlypasted together and the use of any sealing material is avoided. Thus,neither can the quenching means escape, nor can it undergo an alterationin the course of time. The forcing out of the quenching means takesplace due to the fact that a portion of the quenching device is made ofa readily inflammable material such as celluloid which will be directlyignited by the flre kindled. This ignitible member contains gunpowder orthe like, the combustion of which will produce a considerable pressureabove atmospheric, due to which the quenching fluid will be driven outwith great strength.

If the apparatus is used for the purpose of avoiding carburettor firesin automobiles, it should be mounted above the carburettor so that thebottom of the apparatus is turned toward the burning area. On thebreaking-out of a fire the readily ignitible shot-firing fuse that endsat the said area will therefore be at once ignited, so that a momentaryeffect of the quenching device will take place. Other advantages of theuse of artificial resin over the use of metal are the small weight andmeasurements of the device, which both are apt to favorably influencethe price of the apparatus.

In the drawing, an example of an embodiment of the invention isillustrated.

Fig. 1 is a longitudinal section of the quenching device according tothe invention; and

Fig. 2 shows the atomiser which forms a part of the quenching device.

I is a container made of artificial resin or the like. The saidcontainer is sealed at the top thereof by a cap 2 threaded on, and, bymeans of a fluid, pasted onto member I. At the bottom of the saidcontainer a bottom plate 3 made of a readily inflammable material suchas celluloid is tightly fitted in. The said container is almostcompletely filled with a quenching fluid, such as carbon tetrachloride,ethyl bromide or the like. These quenching fluids are chemically neutralto artificial resin and celluloid, so that no alterations can take placeby the action of these chemicals. Into the bottom plate a small tube 4is inserted, which, at least at its lower part, that is, where itisfltted into the bottom plate, is made of a readily inflammablematerial, such as, for example, celluloid. The upper portion of thesmall tube, which,

0 preferably, is flared at 5, may be made of a less readily inflammablematerial. The tube is filled with gunpowder or the like. At the bottomof the container a conical extension 6 is mounted, say, bymeans ofscrews. In order to obtain eflicient atomization of the quenching fluid,a plate 9 is l imtened to the bottom or the eonteiner i, melon piste isformed with e ster-sheped out or loieniz. The said piste is held bymeans of e ring tit The eontsiner is appropriately fastened at timeereri where it is to be protected from fire. For this pur nose may beused e iesteninsmeans which en= oompeesw the eontniner and son betightened end iestened by mesne oi o bolt 3.

strueturei modifications oi time device described my its made withoutei'iendonine the scope oi time preterit invention. Thus, the bottomplate 63 mny toe mde oi urtificielresin insteed of celluloid end tony benli of a piece with member i so tlnet, it desired, only the smell tune 3with the flare 5 is made of en in materiel, such as celluloid. in eitheroese, however, the efieot wiil be the some, sinee, due to the broizemoutfire, the lower nortion oi the tube #3 will be burnt end, thereby, thegunpowder ignited end the quenching menus driven out.

it is to be understood that the device according to the invention is notlimited to the use in automobiles, but may be employed with advantage inexplosion motors in general, as well as in cinema,- oebins or places forstoring ignitable materiel.

i. In a fire extin e molded container termed-oi e synthetic resin, onextinguishing me,-

enseeso teriel in said container, as sweetened end Wed inteernily formedin said container, said wall having es en insert s tube projectingtnerethroueh and. extending into the interior of said container, anexplosive mnteriei carried by the inner end of said tube, fuse moonsextending through ssid tube and eonimunicetlng with said explosivemateriel, and it highly inflammable outer end portion on seid tubeoontscting seld fuse menus.

2. In e fire extinguisher, e. molded container formed oi e syntheticresin, e volstile entineuisit= ing liquid substantially filling saidoonteiner, e treelzened end wsli integrally formed in said can teiner,sold well moving as an insert it tube proiecting therethrough endextending into the interior of sold container, on eniereed "chamberiormed on the inner end of said tube and snr= rounded by sold liquid, anexplosive materiel eon fined in said chamber, fuse means contained insaid tube and communicating with said explosive, a highly in m blemateriel comprising the outer end of said tube and contacting said fusemeans, and a. cap of said synthetic resin forming a closure for theother end of sold container and integrally secured therewith by ahomogenous

